- Gem bomb the center with 7 grade 7 gems.
- Defeat all 228 waves (much harder).
Many players have attempted to clear out all 228 waves; only a few have succeeded. The first person to have beaten all 228 waves on this field was Inthrees.
Use dual red-orange gems for mana and prismatic gems (all 8 colors) for damage. Clearing out the 228 waves is diffcult and takes a long time. The final wave of monsters consists of runners with 1 billion hp, and the second-to-last wave is a giant monster with 3,917,358,102 hp. To defeat these last monsters, extremely powerful gems and a good holding strategy are required. 10 gems with 100,000 max damage each appears to be the minimum. Producing such powerful gems requires a solid mana farm, good super-gemming technique, appropriately angered monsters, appropriate levels of lag, and time.
After winning the battle (destroy the seal or defeat 228 waves), you will get the Gem of Eternity. However, removing the Gem of Eternity also removes the seal on the Forgotten, who will then come out, blacken the UI, cover all the screen and corrupt you.